Transmission with Segregated Braking Device Housing

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Solution Overview

Problem

Conventional industrial vehicle transmissions with integrated braking devices and power transmission reduction gear systems require disassembly of the entire system for maintenance, leading to increased complexity and reduced lifespan of bearings and gears due to oil deterioration.

Innovation Solution

A transmission design where the braking device is integrated with a separable housing, allowing for maintenance of only the reduction gear system parts without disassembling the entire transmission, and an oil flow path is created around the braking device to prevent wear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the braking device is integrated with the power transmission reduction gear system, then manufacturing costs are reduced and construction is simplified, but maintenance and repair work becomes difficult requiring disassembly of the entire system

Engineering Contradiction:
Improvemanufacturing cost reductionVSAvoidmaintenance difficulty
Core Design Contradiction:
Ease of manufactureVSEase of repair

Solution Approach 1:

The housing is divided into a first housing and a second housing that can be separated from each other. The braking device is disposed in the first housing while the planetary gear assembly is disposed in the second housing. This segmentation allows the braking device to be accessed and maintained by simply separating the housings without disassembling the entire transmission system, thus resolving the contradiction between integrated construction and ease of repair.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the opening and access cover are disposed opposite the drive means, then work on the braking device can be conducted by opening the access cover, but parts of the transmission from the drive means to the power transmission part must be disassembled

Engineering Contradiction:
Improveaccessibility for maintenanceVSAvoiddisassembly scope
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The housing is segmented into two separable parts: a first housing containing the braking device and a second housing containing the planetary gear assembly. This segmentation allows direct access to the braking device by simply separating the housings, eliminating the need to disassemble transmission parts between the drive means and power transmission part, thus resolving the contradiction between accessibility and disassembly scope.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If the braking device is integrated with the reduction gear system, then construction is simplified, but oil deterioration occurs reducing the lifetime of bearings and gears

Engineering Contradiction:
Improveconstruction simplicityVSAvoidcomponent lifetime
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The housing is divided into a first housing for the braking device and a second housing for the planetary gear assembly. This physical separation prevents oil from the reduction gear system from contacting the braking device, preventing oil deterioration while maintaining construction simplicity through the integrated yet separable design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The braking device is extracted from the oil-filled reduction gear system environment by placing it in a separate first housing. This extraction prevents the braking device from being exposed to deteriorating oil, thereby extending the lifetime of bearings and gears while maintaining the simplicity of an integrated transmission construction.

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates easier maintenance and extends the lifespan of bearings and gears by isolating the braking device from the power transmission system and circulating oil to prevent wear.

Implementation Method 1

an oil flow path is created around the braking device to prevent wear

Methodology Applied
Scientific EffectFluid circulation: Convection

Data Source

PatentUS7556581B2Transmission having integrated braking device
Publication Date: 2009.07.07 SEIL INDUSTRY CO LTD
  • US7556581B2 patent drawing
  • US7556581B2 patent drawing
  • US7556581B2 patent drawing

AI summary

Disclosed is a transmission, which makes it possible to conduct work of repairing or replacing a braking device by disassembling only parts of a reduction gear system after separating a housing, and in which oil is provided around the braking device and circulates along a flow path, thus preventing the braking device from wearing, thereby extending the lifetime of bearings and gears. The housing is separable at a point between a driven gear and a planetary gear assembly.